bzr on Windows

[Alexander Belchenko]

Robert Collins пишет:
>> > I think we have a python version of diff3, so this should not bee needed
>> > anymore.
>>
>>Yes, it is.
> 
> 
> I'm not clear here : yes diff3 is needed? Or yes our python diff3 means
> that external diff3 is not needed ?

I'm don't sure in this moment.
When I'm remove path to gnu diff from my $PATH environment variable and 
run selftest,
it will also pass the same 54 tests and fails on test_merge. May be I do 
not reach diff-tests due to the bug in merge?

But bzrlib\diff.py module have function external_diff that will try to 
spawn diff utility, so I'm really not sure in question: is diff utils 
neede or not? But I'm sure that if mentioned function external_diff 
covered by selftest it will fails on Windows on either reasons:

- if user does not have diff utils installed and listed in $PATH variable
- anyway fails because diff invoked with os.spawnvp function of Python, 
but this function (and all spawn with -p suffix) does not exists on Windows.

Alexander